The Duchess of Cambridge is mounting horses despite reported allergies. Photo: John Stillwell/PA

The Duchess of Cambridge is defying allergies to take horse riding lessons because she wants to make Prince William happy.

Sources say her husband would love nothing more than for his spouse to share his love of equines despite her discomfort.

One said: “William has always wanted her to ride with him.

“Horses are a big part of his life. He grew up watching his mother Princess Diana ride and he learned very young. He even had a pony of his own since before he could even ride.

“He would love to share his love of horses and horseback riding with Kate and she really wants to make him happy.”

Despite her allergies, Catherine is excited about the lessons.

The insider added to America’s OK! magazine: “She’s really looking forward to being able to join in all the family activities that involve riding.

“She feels it’s more than worth it to feel like part of the family.”